US7511140B2 - Process for preparing the calcium salt of rosuvastatin - Google Patents
Process for preparing the calcium salt of rosuvastatin Download PDFInfo
- Publication number
- US7511140B2 US7511140B2 US10/524,235 US52423505A US7511140B2 US 7511140 B2 US7511140 B2 US 7511140B2 US 52423505 A US52423505 A US 52423505A US 7511140 B2 US7511140 B2 US 7511140B2
- Authority
- US
- United States
- Prior art keywords
- methylsulfonyl
- fluorophenyl
- pyrimidin
- isopropyl
- dihydroxyhept
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 60
- BPRHUIZQVSMCRT-VEUZHWNKSA-N rosuvastatin Chemical compound CC(C)C1=NC(N(C)S(C)(=O)=O)=NC(C=2C=CC(F)=CC=2)=C1\C=C\[C@@H](O)C[C@@H](O)CC(O)=O BPRHUIZQVSMCRT-VEUZHWNKSA-N 0.000 title claims description 67
- 159000000007 calcium salts Chemical class 0.000 title description 14
- 229960000672 rosuvastatin Drugs 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 196
- -1 (3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt Chemical class 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims description 132
- 150000003839 salts Chemical class 0.000 claims description 83
- 238000001914 filtration Methods 0.000 claims description 70
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 62
- 239000001110 calcium chloride Substances 0.000 claims description 56
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- LALFOYNTGMUKGG-BGRFNVSISA-L rosuvastatin calcium Chemical compound [Ca+2].CC(C)C1=NC(N(C)S(C)(=O)=O)=NC(C=2C=CC(F)=CC=2)=C1\C=C\[C@@H](O)C[C@@H](O)CC([O-])=O.CC(C)C1=NC(N(C)S(C)(=O)=O)=NC(C=2C=CC(F)=CC=2)=C1\C=C\[C@@H](O)C[C@@H](O)CC([O-])=O LALFOYNTGMUKGG-BGRFNVSISA-L 0.000 claims description 45
- 238000001035 drying Methods 0.000 claims description 41
- 238000005406 washing Methods 0.000 claims description 38
- 239000000203 mixture Substances 0.000 claims description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 19
- 239000007983 Tris buffer Chemical class 0.000 claims description 12
- 159000000000 sodium salts Chemical class 0.000 claims description 11
- 150000003863 ammonium salts Chemical class 0.000 claims description 8
- 239000002585 base Substances 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 150000003956 methylamines Chemical class 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract description 5
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 abstract description 5
- 125000004528 pyrimidin-5-yl group Chemical group N1=CN=CC(=C1)* 0.000 abstract description 4
- 201000001320 Atherosclerosis Diseases 0.000 abstract description 2
- 208000035150 Hypercholesterolemia Diseases 0.000 abstract description 2
- 208000031226 Hyperlipidaemia Diseases 0.000 abstract description 2
- 208000020346 hyperlipoproteinemia Diseases 0.000 abstract description 2
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 abstract 1
- 239000000047 product Substances 0.000 description 119
- 229960002713 calcium chloride Drugs 0.000 description 53
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 239000007787 solid Substances 0.000 description 14
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 11
- 239000007864 aqueous solution Substances 0.000 description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- 238000002955 isolation Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 239000011541 reaction mixture Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 6
- LLSDKQJKOVVTOJ-UHFFFAOYSA-L calcium chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Ca+2] LLSDKQJKOVVTOJ-UHFFFAOYSA-L 0.000 description 6
- 229940052299 calcium chloride dihydrate Drugs 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000012265 solid product Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000012258 stirred mixture Substances 0.000 description 4
- 238000005292 vacuum distillation Methods 0.000 description 4
- VHOQHIIPURUXMN-DHMAKVBVSA-N (e,3r,5s)-7-[4-(4-fluorophenyl)-2-[methyl(methylsulfonyl)amino]-6-propan-2-ylpyrimidin-5-yl]-3,5-dihydroxyhept-6-enoic acid;methanamine Chemical compound NC.CC(C)C1=NC(N(C)S(C)(=O)=O)=NC(C=2C=CC(F)=CC=2)=C1\C=C\[C@@H](O)C[C@@H](O)CC(O)=O VHOQHIIPURUXMN-DHMAKVBVSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- YSKWBRKUYJVFRK-DHMAKVBVSA-N azane;(e,3r,5s)-7-[4-(4-fluorophenyl)-2-[methyl(methylsulfonyl)amino]-6-propan-2-ylpyrimidin-5-yl]-3,5-dihydroxyhept-6-enoic acid Chemical compound [NH4+].CC(C)C1=NC(N(C)S(C)(=O)=O)=NC(C=2C=CC(F)=CC=2)=C1\C=C\[C@@H](O)C[C@@H](O)CC([O-])=O YSKWBRKUYJVFRK-DHMAKVBVSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 239000008194 pharmaceutical composition Substances 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical class [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000013401 experimental design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- BSUWMDOAIDKYGO-YHPCUIBDSA-N (e,3r,5s)-7-[4-(4-fluorophenyl)-2-[methyl(methylsulfonyl)amino]-4-propan-2-yl-1h-pyrimidin-5-yl]-3,5-dihydroxyhept-6-enoic acid Chemical compound C=1C=C(F)C=CC=1C1(C(C)C)NC(N(C)S(C)(=O)=O)=NC=C1\C=C\[C@@H](O)C[C@@H](O)CC(O)=O BSUWMDOAIDKYGO-YHPCUIBDSA-N 0.000 description 1
- BPRHUIZQVSMCRT-VEUZHWNKSA-M CC(C)C1=C(/C=C/[C@@H](O)C[C@@H](O)CC(=O)[O-])C(C2=CC=C(F)C=C2)=NC(N(C)S(C)(=O)=O)=N1.[Ca+2] Chemical compound CC(C)C1=C(/C=C/[C@@H](O)C[C@@H](O)CC(=O)[O-])C(C2=CC=C(F)C=C2)=NC(N(C)S(C)(=O)=O)=N1.[Ca+2] BPRHUIZQVSMCRT-VEUZHWNKSA-M 0.000 description 1
- 102000004286 Hydroxymethylglutaryl CoA Reductases Human genes 0.000 description 1
- 108090000895 Hydroxymethylglutaryl CoA Reductases Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- YYEWYYSTAYWBES-DHMAKVBVSA-M OC[N+](C)(CO)CO.CC(C)C1=NC(N(C)S(C)(=O)=O)=NC(C=2C=CC(F)=CC=2)=C1\C=C\[C@@H](O)C[C@@H](O)CC([O-])=O Chemical compound OC[N+](C)(CO)CO.CC(C)C1=NC(N(C)S(C)(=O)=O)=NC(C=2C=CC(F)=CC=2)=C1\C=C\[C@@H](O)C[C@@H](O)CC([O-])=O YYEWYYSTAYWBES-DHMAKVBVSA-M 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000007916 tablet composition Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical class OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/32—One oxygen, sulfur or nitrogen atom
- C07D239/42—One nitrogen atom
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/06—Antihyperlipidemics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
Definitions
- This invention concerns improvements to a chemical process, particularly a chemical process for manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt (illustrated below), which is useful for the production of a pharmaceutical useful in the treatment of, inter alia, hypercholesterolemia, hyperlipoproteinemia and atherosclerosis.
- Compound (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid (hereinafter referred to as the ‘Agent’) and its sodium salt and calcium salt were disclosed in European Patent 0521471.
- This patent also describes a process for the synthesis of the calcium salt of the Agent, the final stage of which is the conversion of the sodium salt of the Agent into the calcium salt. The calcium salt thus formed is then collected and dried and may be processed further as required.
- the process as described in both of the above documents comprises dropwise addition of an aqueous solution of calcium chloride to an aqueous solution of the sodium salt at 20° C., stirring of the resulting mixture for, for example 45 minutes, and then isolation of the product precipitate by filtration.
- the filtered product is washed and dried under reduced pressure at 40° C. Efficient washing of the product is essential to ensure removal of sodium chloride produced as a by-product of the reaction. Filtration and drying are then required to give a final product suitable for use as a pharmaceutical.
- reference to improved efficiency of filtration refers to achieving removal of more solvent, such as water, from the product during filtration and optionally to filtration being faster. It will be appreciated that in general a product which is isolated with a low solvent (such as water) content requires less drying time after isolation than one with a higher solvent content in order to achieve the same overall endpoint. It will also be appreciated that the advantages associated with efficient filtration during the initial isolation of the product will also be realised for filtrations carried out as part of any subsequent washing process.
- the present invention provides an improved process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3, 5-dihydroxyhept-6-enoic acid, wherein the process parameters are selected to give a product which demonstrates improved efficiency of filtration.
- Suitable water soluble salts may be metal salts, for example an alkali metal salt, such as sodium, lithium or potassium; or an ammonium salt or an organic amine salt such as methylamine or TRIS (tris(hydroxymethyl)aminomethane) salt.
- Preferred salts are the sodium salt, potassium and ammonium salts.
- Further preferred salts are the ammonium, methylamine and TRIS salts.
- a further preferred salt is the TRIS salt. Most preferred is the sodium salt.
- the solution of the water soluble salt may be produced by dissolution of a solid form of the salt in water.
- the solution of the water soluble salt may be generated from (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid or a suitable derivative thereof, for example an alternative salt form.
- the water soluble salt is the sodium salt
- it may be generated by treatment of an alternative salt (in solid form or as a suspension or a solution in water) such as an amine salt (for example ammonium or methylamine salt) with a sodium base, for example sodium carbonate or sodium hydroxide, preferably sodium hydroxide.
- an alternative salt in solid form or as a suspension or a solution in water
- a sodium base for example sodium carbonate or sodium hydroxide, preferably sodium hydroxide.
- the sodium base is a solution in water.
- other bases such as other alkali metal bases could be used to generate solutions of other water soluble salts.
- the solution of calcium chloride will be an aqueous or substantially aqueous solution.
- the solution of the water soluble salt will be an aqueous or substantially aqueous solution.
- substantially aqueous solution herein, we mean a solution in water which may also contain small amounts of organic or inorganic compounds, for example arising from incomplete removal of solvent after the previous manufacturing stage. It will be understood that the presence of small amounts of organic or inorganic impurities may require adjustments to the process conditions as herein described (for example temperature) in order to obtain a product which can be filtered efficiently, but that any such adjustments would not require undue experimentation by the skilled man.
- process parameters which are features of the present invention comprise the temperature at which the two solutions are added together and optionally the period of time for which the two solutions are mixed.
- the mixing of the two solutions is achieved by addition of the calcium chloride solution to the solution of the water soluble salt of the Agent.
- addition time is carried out over a period of time, hereinafter referred to as the ‘addition time’.
- the mixture is generally stirred for a period of time hereinafter referred to as the ‘hold time’.
- Reference hereinbefore to mixing of the calcium chloride solution with the water-soluble salt solution for a period of time is to be understood to refer to mixing these solutions for the combination of the addition time and the hold time.
- the addition temperature is selected to give a product which demonstrates improved efficiency of filtration.
- the addition is carried out at a temperature (hereinafter referred to as ‘the addition temperature’) of between 30 and approximately 45° C., preferably between 32 and 43° C., more preferably between 35 and 42° C., and most preferably at approximately 40° C.
- the addition temperature is between 30 and 43° C., conveniently between 30 and 40° C.
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature is selected to give a product which demonstrates improved efficiency of filtration.
- the calcium chloride solution may be heated before it is added to the water soluble salt solution, however it will be understood that such heating should not result in the addition temperature being elevated above 45° C., and preferably not above 40° C. It will be understood that the addition temperature refers to the temperature of the water soluble salt solution.
- the addition temperature, addition time and hold time are selected to give a product which demonstrates improved efficiency of filtration.
- the addition time is 5 to 60 minutes, in particular 15-30 minutes.
- the hold time is at least 10 minutes. In another embodiment, the hold time is at least 15 minutes. In a further embodiment, the hold time is at least 30 minutes. It is convenient to stir the mixture during the hold time at approximately the addition temperature.
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept6-enoic acid under conditions such that the addition temperature, addition time and hold time (all as hereinbefore defined) are selected to give a product which demonstrates improved efficiency of filtration.
- the calcium chloride is added at a temperature of between 32 and 43° C. over a period of 15 to 30 minutes, the mixture held at a temperature of between 32 and 43° C. over a period of at least 15 minutes, then the product is isolated by filtration and then dried.
- the calcium chloride is added at a temperature of between 32 and 43° C. over a period of 15 to 30 minutes, the mixture held at a temperature of between 32 and 43° C. over a period of at least 30 minutes, then the product is isolated by filtration and then dried.
- the addition temperature and hold time are selected to give a product which demonstrates improved efficiency of filtration.
- the addition temperature is 32 to 43° C. and the hold time is at least 30 minutes. In another aspect, the addition temperature is 32 to 43° C. and the hold time is at least 15 minutes.
- the addition temperature is selected to give a product which demonstrates improved efficiency of filtration.
- the addition temperature is 32 to 43° C. In a further aspect the temperature is approximately 40° C.
- the addition time is selected to give a product which demonstrates improved efficiency of filtration.
- the addition time is 15 to 30 minutes.
- the hold time is selected to give a product which demonstrates improved efficiency of filtration.
- the hold time is at least 15 minutes.
- the process of the invention results in a more efficient filtration process such that the solid product isolated on the filter has a reduced water content (and therefore higher ‘paste strength’) than the equivalent product obtained after precipitation at 20° C.
- the paste strengths obtained with the process of the present invention will be greater than 45% w/w.
- the final drying step after removal from the filter may be of shorter duration and hence manufacturing output may increase.
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature, addition time and hold time are selected to give a product with a paste strength of more than about 45% w/w, such as about 50% w/w, or about 55% w/w, or about 60% w/w, or about 65% w
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid over 5 to 60 minutes at a temperature of 30 to 45° C., holding the mixture at a temperature of 30 to 45° C. for at least 10 minutes, filtering, optionally washing, and drying of the resultant product.
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl]3(3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid over 15 to 30 minutes at a temperature of 32 to 43° C., holding the mixture at a temperature of 32 to 43° C. for at least 15 minutes, filtering, optionally washing, and drying of the resultant product.
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 30 to 45° C., filtering, optionally washing, and drying of the resultant product.
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 32 to 43° C., filtering, optionally washing, and drying of the resultant product.
- a product with a paste strength of more than about 45% w/w such as about 50% w/w, or about 55% w/w, or about 60% w/w, or about 65% w/w, or about 70% w/w, or about 75% w/w, or about 80% w/w, or about 85% w/w, or about 90% w/w, or about 95% w/w.
- a product with a paste strength of more than about 45% w/w such as about 50% w/w, or about 55% w/w, or about 60% w/w, or about 65% w/w, or about 70% w/w, or about 75% w/w, or about 80% w/w, or about 85% w/w, or about 90% w/w, or about 95% w/w.
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R ,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 32 to 43° C., filtering, optionally washing, and drying of the resultant product to give a product with a paste strength of more than about 45% w/w, such as about 50% w/w, or about 55% w/w, or
- a further aspect of the invention provides a product obtainable by the process of the present invention.
- Another aspect of the invention provides a product obtained by the process of the present invention.
- Suitable conditions for isolating the product include pressure filter or centrifuge.
- the product can be dried in a pressure filter or centrifuge under nitrogen flow or by vacuum or discharged from the isolation equipment into a cone drier, for example, and dried under vacuum.
- the different physical form is manifested by an increased particle size of the product arising front the inventive process.
- the particle size may be illustrated for example by measurement of the specific surface area of the solid, by any method known in the art.
- the specific surface area of product obtained from the process of the invention is generally less than approximately 1 m 2 /g (as measured by Fisher technique, see for example Gooden, Ernest L and Smith Charles M, Ind Eng Chem, Anal Ed. 12, 479-482 (1940), and Corman P. C., J. Soc. Chem. Ind, 57, 225-239).
- the specific surface area of product obtained from the process of the prior art is generally greater than or equal to approximately 2 m 2 /g.
- the specific surface area (SSA) as measured by the Fisher technique is less than 1 m 2 /g. In another aspect the SSA is less than 0.9 m 2 /g. In another aspect the SSA is less than 0.8 m 2 /g. In another aspect the SSA is less than 0.7 m 2 /g. In another aspect the SSA is less than 0.6 m 2 /g. In another aspect the SSA is less than 0.5 m 2 /g. In another aspect the SSA is less than 0.4 m 2 /g. In another aspect the SSA is less than 0.5 m 2 /g. In another aspect the SSA is less than 0.3 m 2 /g.
- the increased particle size of the product obtained from the process of the invention may also result in advantageous properties in the material obtained after filtration, optional washing and drying.
- the filtered, dried material may flow more easily, and/or be easier to mill, and/or be easier to formulate (for example by compression into a tablet formulation by any method known in the art).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature is selected to give a product with a specific surface area of less than 1 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5dihydroxyhept-6-enoic acid under conditions such that the addition temperature is selected to give a product with a specific surface area of less than 0.8 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature is selected to give a product with a specific surface area of less than 0.6 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature is selected to give a product with a specific surface area of less than 0.5 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature is selected to give a product with a specific surface area of less than 0.4 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature, addition time and hold time (all as hereinbefore defined) are selected to give a product with a specific surface area of less than 1 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature, addition time and hold time (all as hereinbefore defined) are selected to give a product with a specific surface area of less than 0.8 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature, addition time and hold time (all as hereinbefore defined) are selected to give a product with a specific surface area of less than 0.6 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5 -yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature, addition time and hold time (all as hereinbefore defined) are selected to give a product with a specific surface area of less than 0.5 m 2 /g (measured by Fisher technique).
- the present invention provides a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt, which process comprises mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid under conditions such that the addition temperature, addition time and hold time (all as hereinbefore defined) are selected to give a product with a specific surface area of less than 0.4 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 30 to 45° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 1 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 30 to 45° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.8 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 30 to 45° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.6 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 30 to 45° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.5 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 30 to 45° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.4 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 32 to 43° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 1 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 32 to 43° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.8 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 32 to 43° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.6 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 32 to 43° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.5 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of 32 to 43° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.4 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of approximately 40° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 1 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of approximately 40° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.8 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of approximately 40° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.6 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature of approximately 40° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.5 m 2 /g (measured by Fisher technique).
- a process for the manufacture of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid at a temperature approximately 40° C., filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.4 m 2 /g (measured by Fisher technique).
- a process for the manufacture of(E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid calcium salt which process comprises addition of a solution of calcium chloride to a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid over 15 to 30 minutes at a temperature of 32 to 43° C., holding the mixture at a temperature of 32 to 43° C. for at least 15 minutes, filtering, optionally washing, and drying of the resultant product to give a product with a specific surface area of less than 0.6
- a preferred aspect of the present invention provides a process comprising mixing of a solution of calcium chloride with a solution of a water-soluble salt of (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid such that the addition temperature, addition time and hold time are adjusted to give a product with a specific surface area such that isolation of the product is optimised.
- isolation of the product we mean filtering, optionally washing and drying of the product.
- the product obtainable by the process of the invention may be administered to a warm-blooded animal, particularly a human, in need thereof for treatment of a disease in which HMG CoA reductase is implicated, in the form of a conventional pharmaceutical composition. Therefore in another aspect of the invention, there is provided a pharmaceutical composition comprising a product obtainable by the process of the invention as described above in admixture with a pharmaceutically acceptable diluent or carrier. In another aspect of the invention, there is provided a pharmaceutical composition comprising a product obtained by the process of the invention as described above in admixture with a pharmaceutically acceptable diluent or carrier. Suitable pharmaceutically acceptable diluents or carriers are described in our patent applications WO 01/60804 and WO 01/54668.
- the methylamine salt used as the starting material for Examples 1 and 2 may be prepared as described in WO 00/49104.
- the paste strength of the sample prepared at 40° C. after 15 minutes of filtration was 80%.
- the paste strength of the sample prepared at 20° C. after 15 minutes of filtration was 14%.
- the paste strength of the filtered product was measured after 5 minutes filtration.
- the sample prepared from ammonium salt at 40° C. had a paste strength of 75%.
- the sample prepared from ammonium salt at 20° C. had a paste strength of 45%.
- TMS salt (E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl]-(3R,5S)-3,5-dihydroxyhept-6enoic acid tris(hydroxymethyl)methylammonium salt (TRIS salt) may be prepared as described in (WO 01/60804).
- the paste strength of the filtered product was measured after 5 minutes filtration.
- the sample prepared from TRIS salt at 40° C. had a paste strength of 82%.
- the sample prepared from TRIS salt at 20° C. had a paste strength of 36%.
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070255060A1 (en) * | 2003-10-24 | 2007-11-01 | Tetsuo Okada | Process for the Manufacture of the Calcium Salt of Rosuvastatin (E)-7-'4-(4-Fluorophenyl)-6-Isopropyl-2-'Methyl (Methylsulfonyl) Amino ! Pyrmidin -5-Yl! (3R, 5S)-3,5-Dihydroxyhept-6-Enoic Acid and Crystalline Intermediates Thereof |
US20080058520A1 (en) * | 2001-07-13 | 2008-03-06 | Akio Matsushita | Preparation of Aminopyrimidine Compounds |
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